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Getting my i7 860 to 4.2GHz

post #1 of 18
Thread Starter 
Hey folks!

It's been a while since I last overclocked my CPU, But now I got a Noctua NH-D14, and I'm back for MAWR!

I've been running my CPU @ 4 GHz for quite a while, but now when I want to step up, I can't for the life of me get it to 4.2 GHz with HT On.

I think I've reached the limit of my chip and/or cooler...

BUT! I shall not give up just yet! Hence I came to seek aid from fellow OCN 'clockers!

Here is my current config, the one I've been using for about a year, it's stable and the temps aren't bad at all.

http://valid.canardpc.com/show_oc.php?id=2522651

BIOS Settings:

- BCLK: 200
- Multiplier: 20
- LLC Level 1
- Vcore: 1.38125V
- QPI/VTT Voltage: 1.300V
- PCH Core: 1.140
- CPU PLL: 1.800
- DRAM: 1.660

Where would you go from here? Vcore is already high imo, and I don't see how I'm gonna stabilize the damm thing with HT on since it requires ALOT of power.

P.S. And yes, I know it's only 200MHz, but I wanna do it for the heck of it, after all it's OCN.

Thanks in advance!
Edited by HunT3R.! - 9/25/12 at 7:59am
post #2 of 18
http://www.techreaction.net/2010/09/07/3-step-overclocking-guide-lynnfield/
    
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post #3 of 18
so did you bump the multi to 21? what happened?
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post #4 of 18
Thread Starter 
Quote:
Originally Posted by mtbiker033 View Post

so did you bump the multi to 21? what happened?
Requires A LOT of Vcore in order to be stable enough not to BSOD at IBT, but still fails the test. I didn't go any higher because temps were 90c-ish, and with so much Vcore I suppose it was something else limiting me?
post #5 of 18
I wouldn't dream of trying that with my old 860.
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post #6 of 18
Quote:
Originally Posted by BababooeyHTJ View Post

I wouldn't dream of trying that with my old 860.

I can hit 4.2 Ghz fairly easy with my i5 760 but I think it sometimes harder to do with HT. In my situation I'm usually a little more stable with a 21x multiplier.
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post #7 of 18
Thread Starter 
Quote:
Originally Posted by BababooeyHTJ View Post

I wouldn't dream of trying that with my old 860.
Why? Is it because of Heat? becase of Difficulty?
Quote:
Originally Posted by Accuracy158 View Post

I can hit 4.2 Ghz fairly easy with my i5 760 but I think it sometimes harder to do with HT. In my situation I'm usually a little more stable with a 21x multiplier.
I can also hit 4.2GHz fairly easily without HT. But with HT it seems impossible, the Vcore leap is HUGE (1.34 to 1.42 just to not BSOD in IBT) and even the D14 is struggling with the crazy amount of heat it produces, as my room is very hot and stifling as it is.
Edited by HunT3R.! - 9/25/12 at 11:18am
post #8 of 18
I had two i7 860s back in the day. Both of them required 1.45 vcore and 1.4 vtt for 4.0Ghz under a custom water loop.

As long as you can keep the chip under 85-90C or so you can increase the voltages still.
 
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post #9 of 18
Thread Starter 
Quote:
Originally Posted by Alatar View Post

I had two i7 860s back in the day. Both of them required 1.45 vcore and 1.4 vtt for 4.0Ghz under a custom water loop.
As long as you can keep the chip under 85-90C or so you can increase the voltages still.
Sounds very much like my chip, only that mine require these for 4.2GHz. As I previously stated, I tried 1.42Vcore and 1.4 VTT and it seemed better, not BSODing in IBT. So maybe with a lil' bit more Vcore I could be able to stabilize it. Problem is - Heat. It skyrockets to 90c under IBT and I'm a little bothered about it.

Lucky for me, my chip isn't as demanding as yours @ 4.0GHz biggrin.gif
post #10 of 18
Quote:
Originally Posted by Accuracy158 View Post

I can hit 4.2 Ghz fairly easy with my i5 760 but I think it sometimes harder to do with HT. In my situation I'm usually a little more stable with a 21x multiplier.

Yes, HT can make it tougher but earlier 860s seem to love the core voltage. You've got to remember that the 760 came along much later. I'm sure that Intel improved production along the lines. The 760 that I replaced my 860 with was a much better overclocker.
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